html,
body {
    width: 100%;
}

body {
    background-color: rgb(0, 150, 136);
}

.login-box {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    padding: 20px;
    background-color: #fff;
    border: 1px solid #ccc;
}

.login-box h2 {
    display: inline-block;
    width: 100%;
    text-align: center;
    margin: 0 auto 20px;
}

.layui-input {
    /* border: 0; */
}